(19)

(11)

EP 0 514 389 A1

(12)

(43) Date of publication: 25.11.1992 Bulletin 1992/48 (21) Application number: 91901796.0 (22) Date of filing: 11.01.1991

(51) International Patent Classification (IPC):  F16L 5/ 02( . ) H02G 3/ 22( . ) F16L 41/ 08( . ) (86) International application number: PCT/FI1991/000012 (87) International publication number: WO 1991/010857 (25.07.1991 Gazette 1991/17)

(84) Designated Contracting States: AT BE DE DK FR GB IT NL SE (30) Priority: 12.01.1990 FI 19900000171 30.11.1990 FI 19900005927 (71) Applicant: RP OY TEOLLISUUDEN JA RAKENTAJAIN PALVELUKESKUS SF-48900 Sunila (FI)	(72) Inventors: PUTTONEN, Martti SF-49210 Huutjärvi (FI) JUUSTI, Pekka SF-48600 Karhula (FI) JUUSTI, Vesa SF-49300 Tavastila (FI) (74) Representative: Jones, Michael Raymond  HASELTINE LAKE & CO. Hazlitt House 28 Southampton Buildings Chancery Lane London WC2A 1AT London WC2A 1AT (GB)